Is your suede the type that has a knit tricot backing? If it gives when you stretch it then you will probably have the same trouble I had. I don't know if spray basting would work on it or not. You might consider a quilt as you go. That is where you quilt individual blocks and then sew the whole thing together. I hope my answer works for you. I would hate to see you get it almost finished and then have a disaster. I used cotton batting with 20 percent poly.